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2021:28 Analysis of Radon Levels in Swedish Dwellings and Workplaces
Background Exposure to radon is considered the second most important cause of lung cancer next to smoking and is estimated to account for about 500 lung cancer cases per year in Sweden. For this reason, it is ... how many dwellings and workplaces there are which exceed the reference level 200 Bq/m³. This study focuses on single-family houses but also includes analysis for some workplaces and multi-family houses...
Content type: Publications -
2021:21 Region-specific radioecological evaluation of accidental releases of radionuclides from ESS
particles could be released to the atmosphere and contaminate the surroundings. The particles, such as the alpha-emitting 148Gd, are found in various eco-systems and possibly introducing expo-sure pathways to ... local food production and the consumption patterns for representative persons. Therefore, there is a need to enhance the knowledge of the behaviour of radionuclides such as gadolinium and other rare earth elements...
Content type: Publications -
2021:20 Effects of additives on UO2 fuel behavior: expanded edition
additives like chromia and gadolinia is used in Swedish reactors and fuel with even better thermal and mechanical properties is under development. This project is an in-depth study of data and models regarding ... additives on the properties of uranium dioxide fuel for light water reactors. The report is an update and expansion of the study of additives for uranium dioxide pellets that Quantum Technologies AB conducted...
Content type: Publications -
2021:19 Importance Sampling Time-Domain Random Walk (ISTIDRAW) Version 1.0 User Guide A Code for Radionuclide Transport in Pathway Networks
e.g. include the flexibility to account for variability and uncertainty in transport parameters. SSM has, to develop expertise in TDRW methods and to possess independent modelling tools in this respect ... limitations and nonstated assumptions of numerical methods, to explore the importance of alternative release scenarios with e.g. different representations of variability and uncertainty, and develop an...
Content type: Publications -
2021:14 Reliability, Feasibility and Significance of Measurements of Conductivity and Transmissivity of the Rock Mass for the Understanding of the Evolution of a Repository of Radioactive Waste
research was part of the international research project DECOVALEX 2019 (DEvelopment of COupled models and their VALidation against EXperiments). DECOVALEX 2019 consisted of seven different research projects ... (TUL), Seoul National University (SNU) and geomecon GmbH (GMC), and focused on the excavation damage zone (EDZ) and it’s coupling to water flow. The formation of EDZ and the associated change of rock mass...
Content type: Publications -
2021:13 SSM’s external experts’ review of SKB’s safety evaluation SE-SFL
SSM perspective Background In Sweden long-lived low- and intermediate level radioactive waste is planned to be disposed in a repository (SFL) in the Swedish crystalline rock at a depth around 500 m. The ... operation and decommissioning of the Swedish nuclear reactor plants, as well as the long-lived wastes from early research in the Swedish nuclear program (legacy wastes), from medicine, industry and research...
Content type: Publications -
2021:10 Establishment and use of attention values in environmental fatigue assessments
coolant environment. The present study aims to investigate how attention values can be established and used. Furthermore, the study investigates the possibility to apply a general attention value for Swedish ... systems and one location in a PWR system. Environmental conditions are included in the analyses with the purpose to get an enhanced under-standing of how attention values could be established and used. For...
Content type: Publications -
2021:09 Mechanisms important for material modelling in weld residual stress analysis
very complex as many mechanisms and phenomena influence the development of WRS during welding. For accurate prediction, the constitutive material models used are essential and must be able to describe the ... constituents. For example, selection of a material model should only depend on material behaviour and not on other parameters, mechanisms or modelling techniques. Thus, before constitutive models for welding...
Content type: Publications -
2021:08 Recent Research on EMF and Health Risk, ifteenth report from SSM’s Scientific Council on Electromagnetic Fields, 2020
monitors current research on potential health risks in relation to exposure to electromagnetic fields and provides the authority with advice on assessing possible health risks. The Council gives guidance when ... is necessary. The council is required to submit a written report each year on the current research and knowledge situation. This is a consensus report. This means that all members of the Scientifc Council...
Content type: Publications -
2021:06 Quality Assurance Review of the Swedish Nuclear Fuel and Waste Management Company’s LOT Experiment (Phase S2 and A3) at the Äspö Facility in Sweden
Background This report presents a quality assurance (QA) review of the work done by SKB to retrieve the S2 and A3 parcels from the Long term test of buffer material (the LOT experiment) at the Äspö Hard Rock Laboratory ... of copper coupons and various other test and monitoring instruments included in the bentonite. The S2 and A3 test parcels were recovered in 2019, after 20 years of LOT operation and SKB has analysed corrosion...
Content type: Publications